A column assembly has an elongated tubular member. A wall end assembly has an elongated tubular member. A flexible interface connects the column assembly to the wall end assembly. The flexible interface includes a spring pack assembly having a disc spring, an elongated male fastening member, a female fastening member, and an absorbing layer. The male fastening member extends through the spring pack hole into the female fastening member to connect the column assembly to the wall end assembly with the female fastening member and to hold the male fastening member in place.

A column assembly has an elongated tubular member. A wall end assembly has an elongated tubular member. A flexible interface connects the column assembly to the wall end assembly. The flexible interface includes a spring pack assembly having a disc spring, an elongated male fastening member, a female fastening member, and an absorbing layer. The male fastening member extends through the spring pack hole into the female fastening member to connect the column assembly to the wall end assembly with the female fastening member and to hold the male fastening member in place.

A partition wall sound insulation structure includes: a floor material on which a floor surface facing an indoor space side is formed; a ceiling material on which a ceiling surface is formed, the ceiling surface being opposed to the floor surface in a vertical direction with an indoor space interposed therebetween; a partition wall that extends in the vertical direction so as to partition the indoor space in a horizontal direction and that is disposed with a gap from at least one surface of the floor surface and the ceiling surface; and a sound insulation material made from an elastic material and including a portion disposed in the gap while being compressed in the vertical direction.

Disclosed a molded body including: a plurality of cavity portions formed inside a molding material; and a plurality of neck portions provided in each of the plurality of cavity portions and configured to communicate with the cavity portions, wherein some of the plurality of neck portions communicate with a surface and/or the cavity portion exposed on the surface, wherein at least some of the plurality of neck portions cause the plurality of cavity portions to communicate with each other, and wherein an inner surface of the neck portion is formed by the molding material itself.

A sound absorbing structure includes a wall having a first side and a second side and at least one acoustic scatterer coupled to a first side of the wall. The first side of the wall may be positioned to face a source of noise, such as moving motor vehicles, airplanes, and the like. The at least one acoustic scatterer has an opening and at least one channel. The at least one channel has a channel open end and a channel terminal end with the channel open end being in fluid communication with the opening.

A variable acoustic assembly comprising a housing and a one or more absorbing pads. The housing contains the one or more absorbing pads, a one or more doors, a one or more rear brackets, and a one or more hinges. The one or more doors attach to the one or more rear brackets with the one or more hinges. The one or more doors are configured to selectively open and selectively close between an open configuration and a closed configuration by rotating on the one or more hinges. The variable acoustic assembly having a closed width in the closed configuration and an open width in the open configuration. With the one or more doors in the open configuration, a portion of the one or more absorbing pads are exposed outside of the housing.

A laminated structure for use in retrofit building construction (partition, wall, ceiling, floor or door) that exhibits improved acoustical sound proofing characteristics while being optimized for efficient installation. The laminated structure includes a panel with at least one layer of viscoelastic glue, or fire-10 resistant, viscoelastic glue, which functions both as a glue and an energy dissipating layer. In one embodiment, the laminated structure to be attached to an existing wall in some embodiments includes standard paper-faced gypsum board. In another embodiment the to-be-applied laminated structure includes a cement-based board, and in yet another embodiment the to-be-applied laminated 15 structure includes a cellulose-based board. Once the laminated structure is installed on an existing wall or other partition, the resulting structure greatly attenuates transmitted noise and minimizes the labor required for installation and finishing.

A laminated structure for use in retrofit building construction (partition, wall, ceiling, floor or door) that exhibits improved acoustical sound proofing characteristics while being optimized for efficient installation. The laminated structure includes a panel with at least one layer of viscoelastic glue, or fire-10 resistant, viscoelastic glue, which functions both as a glue and an energy dissipating layer. In one embodiment, the laminated structure to be attached to an existing wall in some embodiments includes standard paper-faced gypsum board. In another embodiment the to-be-applied laminated structure includes a cement-based board, and in yet another embodiment the to-be-applied laminated 15 structure includes a cellulose-based board. Once the laminated structure is installed on an existing wall or other partition, the resulting structure greatly attenuates transmitted noise and minimizes the labor required for installation and finishing.

Panel systems and related methods of controlling sound transmission are discussed. For example, the panel system may include a sound control component, which may include a foam composite of a polymer and an inorganic filler. The panel system may further include an attachment mechanism, e.g., including at least one fastener, at least one bracket, and/or at least one rail or rail system. The attachment mechanism may be configured to secure the sound control component between a first wall and a second wall, such that the panel system controls sound transmission between the first and second walls.

A method for changing acoustics of a performance space may include mounting a plurality of panel assemblies to a ceiling or a portion of a ceiling of the performance space. Each panel assembly of the plurality of panel assemblies may include one or more acoustic panels. The exemplary method may further include changing a distance of the one or more acoustic panels of each panel assembly of the plurality of panel assemblies from the ceiling by coupling the one or more acoustic panels of each panel assembly of the plurality of panel assemblies with a first actuating mechanism, and actuating a linear vertical movement of the one or more acoustic panels of each panel assembly of the plurality of panel assemblies along a first axis perpendicular to the ceiling utilizing the first actuating mechanism.